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Small dc brushed motors

Manufacturers size designations.

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Bob Mc23/08/2021 08:08:04
199 forum posts
19 photos

Hi All...

am in the process of making an r/c boat, I need to find out which motor to use, I have already used a '400' type motor but have no idea what this means ... I will require a larger motor for the next build so need to know volts/amps/rpm/mechanical size etc.... is there a chart for all this?

will be grateful for any information....Bob.

Edited By Bob Mc on 23/08/2021 08:09:09

mick H23/08/2021 08:40:49
763 forum posts
28 photos

A lot of the information that you require can be found on The Component Shop website catalogue.

Mick

Circlip23/08/2021 08:49:53
1383 forum posts

Try this site Bob, :- Model Boat Mayhem - Index

Regards Ian.

Jouke van der Veen23/08/2021 09:15:41
103 forum posts
8 photos

Some years ago I completed a 1 meter long tugboat, originally built by my son 25 years ago.

Searching for a motor I found information on the internet to use a 12V brushed motor from a car interior blower.

Cheap and with sufficient power to give the boat the speed belonging to its scale.

Ron Laden23/08/2021 10:14:44
avatar
2253 forum posts
446 photos

Have a look at MFA COMO DRILLS they have a large selection of motors and motors with gearboxes, they also give the full spec for all their types.

Joseph Noci 123/08/2021 11:04:24
1013 forum posts
1253 photos
Posted by Bob Mc on 23/08/2021 08:08:04:

Hi All...

am in the process of making an r/c boat, I need to find out which motor to use, I have already used a '400' type motor but have no idea what this means ... I will require a larger motor for the next build so need to know volts/amps/rpm/mechanical size etc.... is there a chart for all this?

will be grateful for any information....Bob.

Edited By Bob Mc on 23/08/2021 08:09:09

Hi Bob.

The term '400 type motor' ( called Speed 400 back then..) dates back a while, and very loosely referred to a motor around near 38mm long, a 500 motor was near 55 or 56mm long, etc. The old 400 DC motors were around 100watts max or so, 10 to 12 amps typically. If I recall, the Speed 400 was around 30mm in diameter.

Are you set on a DC motor? Do you already have the DC PWM RC speed controller? If so that would set some limits on the motor amps/volts choice I guess.

If you are not set on DC, the RC brushless DC motors are a good option. Much more efficient and more power in smaller packages compared to the somewhat dated construction of the cheap Speed series DC motors.

A visit to your local RC hobby shop will deliver..

Eg:

Howes Models UK

E-Flight Park 400

Example E-FLight motor chart

Joe

Bob Mc27/08/2021 15:28:49
199 forum posts
19 photos

Sorry to reply so late ...

was away for a few days and didn't see the responses....thanks to all who replied to my question, these have been most helpful...

rgds..Bob.

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